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a chemical change transforms one kind of matter into another kind which may have different properties
the set of rules that are obeyed by every detail of everything that occurs in the universe
a process of learning that starts with questions and proceeds by seeking the answers to the questions
an unproved or preliminary explanation that can be tested by comparison with scientific evidence. An educated guess of how you think two variables are related
a process of learning that begins with a hypothesis and proceeds to prove or change the hypothesis by comparing it with scientific evidence
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